Mold for making sewer-inlets.



E. B. HIATT. MOLD FOR MAKING SEWER INLETS.

APPLICATION FILED AUG. 22, 1912.

Patened Mar. 17, 1914.

EBJIMZ;

arma:

UNTE

ERNEST B. HIATT,

er Cenone, Iowa.

MOLD FOR MAKING SEWERJNLETS.

Loenen.

Specification of Letters Patent.

Patented Mar. 17, 1914i..

To aZZ whom it may concern Be it known that l, lnnns'r l. ll-lm'rr, a citizen oit' the United States, residing,` at Truro, in the county et' htadison and State o't Iowa, have invented certain new and use- Jful improvements in Molds 'for Making Sewer-inlets; and lt do declare the following to be a itull, clear, and exact description oi' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in concrete molds and more particularly these iter making sewer inlets ttor concrete curbs,

@ne object of this invention is to 'furnish a, mold oit this character for sewer er other inlets which may have a grating in the Lt'orm oit bars having their opposite ends embedded in the material through which the inlet is 'toi-ined.

W ith the above object in View, the invention consists el certain novel features et construction, eemliination and arrangement o't parts, as will be hereinafter described and claimed.

ln the accompanying,` drawings z-Figurc l is a iront er outer side View oft a section et curbing, showing the inlet formed therein; Fig. 2 is a rear or inner side View et the same, Fig. 3 is an enlarged vertical cross sectional View through the curb, showing the manner in which the inlet is 'termed and the molds ttor termine,` the saine; and Fig. 4 is a horizontal sectional View oi the curb, taken on the line L31e-ft et Fig. 3.

The sewer inlet may be sired position in a continuous curb, while the same is being constructed er the inlet may be 'termed in a short section ot the curb, and said section placed in position in the main curb at the desired point. In the present instance, the inlet is shown as being formed in a continuons curb l.

The inlet consists et an outer portion or month 2. the top and side walls oit which ineline slightly7 to fard the center et' the opening', while the lower wall inclines or slopes rilownwardly to a slight extent, as shown. The inner or discharge end 3 of the inlet has its side walls flared slightly and its lower wall inclined downward to a considerable angle, as shown at 4. The upper wall ot' the discharge end et the opening is preferably straight.

Across the inlet opening between the enter formed at the dcor mouth portion thereof and the discharge end are vertically-disposed grate hars 5, which are spaced at suitable distances and have their upper and lower ends embedded in the, material :there and below the opening, as shown. Vln the inner side el the curb and surrouinling the inner or discharge end et the opening is a recess t3, which may be of any suitable shape to receive the upper end et a ceinflueter 7 leading' te the main sewer or place oit disposal. At suitable positions in the curb above the inlet opening are embedded horizontal, lengitudinally-disposed reinforcing bars one ot which is prefer-- ably disposed ilnn'iediately in rear oi and in engagement with the upper ends et the grate bars 5. ln the lower portion of the curb below the inlet openingv is also embedded a horizontal reintoreing bar E). 'lhe reinforcing bars S and t) serve to strengthen and protect the curb troni being crushed or broken at the inlet opening therein by vehicles or other objects backing against er striking the curb.

The inlet is termed by means et a cere or mold, comprising an outer member l0 in the torni ot a plate shaped te correspond with tho shape desired iter the mouth or outer end oit the inlet opening, said plate having` en its edges ontwardly-projecting flanges 1l., the top and ends oit which are flared outunrdlyr while the bottom [lange is inclined upwardly to a slight extent, said llared and inclined tlanges el the plate iter-ming' the tlared and inelinci'l walls olf the mouth or outer end oit the inlet opening as hereinheitore described. rl`he plate l() has termed therein a series el? vertically-disposed grooves or channels 12.

The inner member oll the core or meld comljirises a plate 1?), which corresponds in shape te the plate 10 et the outer member ot the mold. ln the plate 13 are termed a series oit YVertical `grooves or channels 11i, which also engage the grate bars 5 and together with the grooves l2 in the plate l() lirmly `rip and hold `the `grate bars in position while the curb is being;` termed around the same. rl`he outer and inner members of the mold are securely fastened in position by means of short bolts l5 having winged clamping), nuts lo. which when screwed up on the bolts lirinly clamp the members of the mold. The upper 'flange et the inner meld is straight ltrom front to rear, while the side flanges lare outwardly to a slight extent. The lower fiange 17 of the inner member of the mold inclines downwardly at a suitable angle. By forming the flanges of the inner member of the mold as herein shown and described, a similar shape or form is given to the rear portion of the inlet opening of the curb. 1t will also be noted that. the upper and lower lianges of both the inner and outer members of the mold are curved transversely to a slight extent to form a curved bottom and arched-shaped top for the inlet.

@n the outer sides of the iianges of the inner member are formed apertured lugs 18, with which are engaged bolts 19 for fastening a recess forming member 20 to the rear or inner end of the mold. The member 20 comprises a ring or plate having an opening 21 corresponding in shape to 'the opening in the inner member' of the mold and has on its outer edge a rearwardly projecting flange 22 which gradually increases in width from the top to the bottom vto correspond with the inclination of the rear side ofthe curb, as clearly shown in F ig. 3 of the drawings. rllhe member 20 may be of any suitable shape for forming the recess 6 in the inner side of the curb t0 receive the end of the conductor 7, said shape of the plate and recess formed thereby corresponding to the shape of the end of the pipe or conductor to be engaged therewith. 1t is proposed to have several of the ring-shaped members 20 for use with each pair of the main or inlet forming members so that that ring may be selected and attached to the inner member by the bolts 19 which will give shape to the recess at the inner end of the inlet that will correspond to the inlet end of the conductor T-thereby leaving the operator free to shape this recess to fit the conductor employed. lf the device were used for forming the openings through curbs throughout acity or town, it would of course be desirable that the inlet ends of said openings as seen in Fig. 1 should be uniform, and probably the other ends would also be uniform although out of sight, but it is quite possible that these inlets would communicate with conductors 7 of different sizes and shapes and therefore the recesses 6 would have to be molded accordingly.

By constructing the mold or core for the inlet as herein shown and described, it will be seen that the members of the mold may be readily assembled and placed in position to form the inlet and may be readily sepainn brick, stone or rated or disassembled after the material of which the curb is formed has set. f

lVhile the invention has been herein shown and particularly described as a sewer inlet for concrete curbs it is obvious that the same may be employed as an inlet for any purpose any other hind of walls, floors, or roofs, or in any other place where an opening is required, such for instance as a Ventilating opening, or an opening through which refuse, fluids of all kinds, light, gas, grain, ore or any other material may be conducted. It will also be obvious that the grate bars may be arranged at any desired angle with their ends embedded in the edges of the opening or if desired the grate bars may be omitted.

F rom the foregoing description, taken in connection with the accompanying` drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any ofthe advantages of this invention, as claimed.

Having thus described my invention, what l claim is:

In a mold for making a sewer inlet, which inlet has upright bars across it, the combination with inner and outer members each consisting of a flat plate having upright grooves adapted to register with those in the other plate to receive said bars, and marginal flanges around the plate formed to give shape to the wall of said opening, the flange of the inner memberrbeing inclined downward at the bottom away from the outer member and this flange having radial lugs at several points around its inner edge, and bolts detachably connecting said plates; of a third member comprising a ring-shaped body whose opening is of the size and Vshape of that ofthe inner member at the inner end of its flange, the body of said third member lying against said lugs and itself having a marginal flange which is narrow at the top and grows wider to its bottom, and means for connecting said body with the lugs, for the purpose set forth.

ln testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ERNEST B. HlTT. l/Vitnesses VVAL'rnR E. GnAYsoN, J. F. LEONARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner' of Eatents, Washington, ID. C. 

